Chuck.



E. C. BOWERS.

CHUCK.

APPLICATION FILED APR. 19, |915.

Patented Oct. 3l, [916.

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ERNEST C. BOWERS, OF KALAMAZOQ, MICHIGAN, ASSIGNOR T0 EUGENE COOK, OF I.: LAMAZOG, MICHIGAN.

maarre.

Patented @et 3i, 1916.

Application led April 19, 1915. Serial No. 22,343.

To all whom z'zf may concern: A

`Be it known that I, ERNEST C. BOWERS, a citizen of the United States, residing at Kalamazoo, Michigan, have invented certain new and useful Improvements in Chucks, of which the followin is a specification.

This invention re ates to improvements in chucks. A

The main objects ofthis invention are: First, to provide an improved chuck in which the tool may be 'secured or released while the spindle is rotating. Second, to provide an improved -chuck in which the tool is very securely retained or clamped by the jaws and at the' same time one in which the jaws can be easily released to free the tool. Third, to provide an improved chuck having a thrust member 'which is advanced and retracted with the jaws so that the smaller sizes of tools are properly supported. Fourth, to provide an improved chuck having these advantages in which the parts are -comparatively simple and eco nomical to manufacture, and easily assembled, and one which is very durable and not likely to get out of repair; v

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

l accomplish the objects of my invention by the devices and means described in the following specification.

rlhe invention is clearly delined and pointed out in the claims.

A structure which is a preferred embodimentof my invention is clearly illustrated in the accompanying drawing forming a part of this specification, in which:

Figure I is a detail View of my improved chuck, parts being 'shown inwlongitudinal central section. Fig. Il is a transverse section on a line corresponding to line 2-2 of Fig. l. Fig. Hl is a transverse sectionon a line corresponding to line 3-3 ofV Fig. I..

v threaded portion In the drawing similar reference charac-4 ters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawings, the spindle head member 1 is secured to or adapted to receive the driving spindle 2. The head member is flange 3. Below this flange the head member has a reduced'portion 4 rovided with an external spiral or coarse t read 5.

'.lhe shell-like body member, designated generally by the numeral 6, is, for convenience in manufacture, formed of an outer shell 7 tapered at its lower end, as at 8, and an inner part 9 upon which ther outer member is threaded. The member 9 is shouldered at 10 to engage the bearing iange 3. The inner part 9 has longitudinal T-shaped slots therein forming ways 11 for the jaws provided with an annular bearingl2. rlhese jaws a'reT-shaped -in cross section to fit the ways, as shown in Fig. V. The ways 11 converge toward the bottom of the body so that as the jaws ,are retracted and extended they are closed or opened, the jaws being closed as they are eX- tended and opened as they are retracted.

The bodymember is retained for rotative movement upon the head member by means of the retaining member 13, whichis arranged above and embraces the flange 3 and 1s threaded into the body member. The retaining member is provided with a ball race 14 for the bearing balls l5 which travel on the bearing iiange 3. 'The body member is,-

as stated, shouldered at 10 to engage this bearing flange. On the reduced externally mount the jaw adjusting sleeve 16 which is externally threaded to engage the threads of the jaws. This adjusting sleeve has slots 17 in lts upper edge which are engaged by the pin 18 arranged through the head member, thereby limiting the rotative movement of the adjusting sleeve on the head member, and consequently its longitudinal movement resulting from its threaded engagement with the spiral or coarse thread 5 of the head member.

l preferably provide a thrust member 19 which is threaded into the head member and provided with a driving lug 2O engaging the groove 21in the body member so that the thrust member is driven with the body mem- El@ v 4 of the body member I i ber are relatively rotated the jaws are retracted or extended to open or close the same, and the thrust member is retracted or extended. LThe advantage of this is that small tools are supported so that they do not extend too far into the chuck.

To release the chuck without stopping I provide a releasing member 22, which is rotatably mounted upon-the head member above the retaining member 13 and provided with a beveled gear v23. On the retaining member is a beveled gear ,24. Arranged between and meshing with these gears are beveled pinions 25, the pinions being mounted on the spindle 26 carried by the head. A sleeve 27 is'threaded upon the' reversing member 22 and rests upon the retaining member 13.- By grasping this sleeve when the spindle is rotating in a forward direction the body member is rotated in the opposite direction, thereby retracting the jaws. To clutch a tool when the spindle is rotating, the body member is grasped, which extends or closes the jaws. The reversing member is retained in position upon the head by the collar 28 threaded upon the upper end of the head member. `When the quick release feature is not desired, the reversing member 22, the pinions and the retaining collar 28 are omitted, as is also the gear 24 on the retaining member 13,-see Fig. VII. The other parts remain the same.

My improved chuckl grasps the tool very securely, but at the same time the jaws do not become wedgedvor clamped up so but that they can be readily released, as the relatively coarse screw thread connection for the adjusting sleeve to the head provides a limited rotative and longitudinal movement which accomplishes this result.

My improved chuck is comparatively simple in its parts, and the parts are simple and economical to produce and quickly and easily assembled. c

I have illustrated and described my improvements in two forms in which I have adapted or embodied the same. I have not attempted to illustrate or describe other embodiments which I contemplate as I believe the disclosure made will enable those skilled in the art to which this invention relates to embody or adapt the same as may be desired. I desire, however, to be understood as claiming my improvements specifically in the form lllustrated as well as broadly within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. In a chuck, the combination of a head member provided with an annular bearing flange and with a reduced portion having :ourse external threads thereon below said flange, a shell-like body member shouldered to coact with said bearing flange and provided with longitudinal jaw ways, a body retaining member rotatably mounted on said head member above said bearing flange and threaded into said body member, bearing balls interposed between said bearing ange and said retaining member, threaded jaws arranged in ,said ways, a tapered jaw adjusting sleeve having slots in its upper end and internally threaded to coact with said external threads of said head member, and externally threaded to coact with the threads of said jaws, a pin through said head engaging said slots permitting a limited rotative movement of said adjusting member relative to said head, a reversing member rotatably mounted on said head abovesaid retaining member and provided with a beveled gear, said retaining member being provided with a beveled gear, pinions arranged between and meshing with said gears a spindle for said' pinions carried by said head member, a sleeve embracing said pinions secured to said reversing member, and a retainin collar threaded upon the upper end of said head above said reversing member.

V2. In a chuck, the combination of a head member'l provided with an annular bearing flange and with a reduced portion having coarse external threads thereon below said flange', a shell-like body member shouldered to coact with said bearing {lange and provided with longitudinal jaw ways, a body retaining member rotatably mounted on said head member above said bearing flange and threaded into said body member, bearing balls interposed between said bearing flange and said retaining member, threaded jaws arranged in said ways, a tapered j awadjusting sleeve having slots in its upper end and internally threaded to coact with said external threads of said head member, and externally threaded to coact with the threads of said jaws, and a pin through said head engaging said slots permitting a limited rotative movement of said adjusting member relative to said head.

3. In a chuck, the combination-of a head member provided with an annular bearing flange Aand with a reduced `portion having coarse external threads thereon below said flange, a shell-like body member shouldered to coact with said bearing lange and provided with longitudinal jaw ways, a body retaining member rotatably mounted on said head member above said bearin iange and threaded into" said body mem er, bearing balls interposed between said bearing -flange and said retaining member, threaded jaws arranged in said ways, a tapered jaw adjustingsleeve having slots in its upper end and internally threaded to coact with said extern'al threads of said head member, and exter- 'nally threaded tovcoact with the threads of said jaws, a pin through said head engaging said slots permitting a limited rotatlve movement of said adjusting member relative to said head, and a drill thrust member threaded into said head andprovidedwith a lug engaging a longitudinal groove in said body member whereby the thrust member is retracted and extended with the jaws.

4. In a chuck, the combination of a head member provided with an annular bearing flange, a shell-like body member shouldered to coact with said bearing flange and provided with longitudinal jaw ways, a body retaining member rotatably mounted on said head member above said bearing flange and threaded into said body member, jaws arranged in said ways, a jaw adjusting sleeve threaded upon said head member and having threaded engagement with said jaws, means for limiting the rotative movement of said adjusting sleeve on its threads on said head member, a reversing member rotatably mounted on said head above said retaining member and provided with a beveled gear, said retaining member being also provided with a beveled gear, and pinion's carried by said head member meshing with said gears.

5. In a chuck, the combination of a head member provided with an 4annular bearing flange, a shell-like body member shouldered to coact with said bearing flange and providedwith longitudinal jawl ways, a body retaining member rotatably mounted on said head member above said bearing flange and threaded into said body member, jaws arranged in said ways, a jaw adjusting sleeve threaded upon said head member and having threaded engagement with said jaws, means for limiting the rotative movement of said adjusting sleeve on its threads on said head member, a reversing member, rotatably mounted on said head member and provided with`a gearsaid retaining member being also provided with a gear, and pinions carried by said head member meshing with said gears.

6. In a chuck7 the combination of ahead member provided with an annular bearing flange, a shell-like body member shouldered to coact with said be'arin flange and provided with longitudinal jaw ways, a body retaining member rotatably mounted on said head member above said bearing flange and threaded into said body member, jaws arranged in said ways, a jaw adjusting sleeve threaded upon said head member and having threaded engagement with said jaws, means for limiting the rotativemovement of said adjusting sleeve on its threads on said head member, a drill thrust member threaded into said head and having driving engagement with said body member whereby it is retracted and extended with the jaws, a reversing` member rotatably mounted on said head member and provided with a gear, said retaining member being also provided with a gear, and pinions carried by said head member meshing with said gears.

7 In a chuck, the combination of a head member, a body member rotatably mounted on said head member and provided with longitudinal jaw ways, `jaws arranged in said ways, a jaw adjusting sleeve threaded upon said head member and having threaded engagement with said jaws, means for limiting the rotative movement of said adjusting sleeve on its threads on said head member, a reversing member rotatably mounted on said head above said body member and provided with a beveled gear, a beveled gear rotatable with said body member, and pin ions carried by said head member meshing with said gears.

8. In a chuck, the combination of a head member, a body member rotatably mounted on said head'member and provided with longitudinal jaw ways, jaws arranged in sai/,d ways, a tapered jaw adjusting sleeve threaded upon said head member and having threaded engagement with said jaws,

and means for limiting the rotative movement of said adjusting sleeve on, its threads `on said head member.

. 9. In a'ehuck, the combination of a head member, a body member rotatably mounted on said head member and provided with longitudinal jaw ways, jaws arranged in said ways, a jaw adjusting sleeve threaded upon said head member and having threaded engagement with said jaws, means for limiting the rotative movement of said adjusting sleeve on its threads on said head member, and a drill thrust member threaded into said head and having driving engagement with said body member whereby tracted and extended with the jaws.

10. InY a chuck, the combination of a head member having coarse external threads at its lower end, a shell-like body member provided with converging longitudinal jaw ways rotatably mounted on said body member, threaded jaws arranged in said ways, a tapered jaw adjusting sleeve having slots in it is reits upper end and internally threaded to i coact with said external threads of said head member, and externally threaded to coact with the threads of said jaws, a pin through said head engaging said slots permitting a limited rotative movement of said ber, threaded jaws arranged in said ways, a tapered aw adjusting sleeve having slots in its upper end and internally threaded to eoand a reversing member rotatably mounted-` on said head above said body memberand provided with a beveled gear, a beveled gear rotatable with said body member, and pinions carried by said head member mesh. ing with said gears.

13. ln a chuck, the combination of a head member, a body member rotatably mounted on said head member and provided with converging., longitudinal jaw ways, jaws arranged in said ways, a tapered jaw adjusting sleeve mounted upon said head member for limited rotative and longitudinal movement thereon and having threaded engagement with said jaws.

14. ln a chuck, the combination of a head member, a body memberrotatably mounted on said head member and provided with converging longitudinal jaw ways, jaws arranged in said ways, a jaw adjusting sleeve mounted upon said-head member for limited rotative and longitudinal movement thereon, and a drill thrust member threaded into said head member and having driving engagement with said body member whereby it is retracted and extended with the jaws.

15. ln a chuck, the combination of a head member provided with an annular bearing flange, a shell-like body member shouldered to coact with said bearing flange and provided with converging longitudinal jaw ways, a body retaining member rotatably mounted on said head member above said bearing iiange and threaded into said body member, jaws arranged in said ways, a jaw adjusting member carried by said head member, a drill thrust member threaded into said head and having driving engagement with said body member whereby it is retracted and extended with the jaws, a reversing member rotatably mounted on said head above saidretaining member and provided with a beveled gear, said retaining member being provided with a beveled gear, pinions arranged between and meshing with said gears, a spindle for said pinions carried by said head member, a sleeve embracing said pinions secured to said reversing` member,

and a retaining collar threaded upon Ithe upper end of said head above said reversing member.

16. In a chuck, the combination of a head membercarrying a threaded portion, a body portion rotatably mounted on said head member and provided with converging longitudinal jaw-ways, jaws arranged in said ways and having teeth in engagement with said threaded portion, and a drill Vthrust member threaded intot said head member, and havin driving engagement with said body mem er whereby it is retracted and extended with the jaws.

17. ln a chuck, the combination of a head member provided with an annularbearing iiange, a shell-like body member shouldered to coact with said bearing flange and provided with converging longitudinal jaw ways, a body retaining member rotatably mounted on said head member above said bearing flange and threaded into said body member, jaws arranged in said ways, a jaw adjusting member carried by said head member, a reversing member rotatably mounted on said head above said retaining member and prevlded with a beveled gear, said retaining member being provided with a beveled gear, pinions arranged between and meshing with said gears, a spindle for said pinions carried by said head member, a sleeve embracing said pinions secured to said reversing member, and a retaining collar threaded upon the upper end of said head .above said reversing member.

18. ln a chuck, the combination of a head member having coarse external threads at its lower end, a shell-like body member provided with jaw ways rotatably mounted on said body member, jaws arranged in said ways, an adjustingsleeve having a slot in yits upper end and internally threaded to coact with the external threads of said head member and having 'operative engagement with said jaws, and a pin engaging said slot permitting a limited rotative movement of said adjusting member relative to said head.

19. in a chuck, the combination of a head member, a body member rotatably mounted on said head member and provided with longitudinal jaw ways, jaws arranged yin said jaw ways, a jaw adjusting sleeve threaded upon with said head member and having operative engagement' with said jaws, means for limiting the rotative movement of said adjusting sleeve on its threads on said head member, a reversing member rotatably mounted on said head above said body member and provided with a beveled gear, a beveled gear rotatable with said body member, and pinions carried by said head member meshing with said gears.

2G. ln a chuck, the combination of a head member provided with an annular bearing iiange, ya shell-like body member shouldered to coact with said bearing flange and provided with longitudinal jaw ways', a body retaining member rotatably mounted on said head member above said bearing iiange and threaded into said bodymember, jaws ar- ,ranged in said ways, a jaw adjusting sleeve threaded upon said head member and having operative engagement with said jaws, means for limiting the rotative movement of said adjusting sleeve on its threads on'said head member, a reversing member rotatably mounted on said head member and provided with a gear, said rotating member being provided with a gear, and pinions carried by said head member meshing with said gears.

21. In a chuck, the combination of a head member, a body member' rotatably mounted on said head member provided with longitudinal jaw ways, jaws arranged in said jaw ways, a jaw adjusting sleeve having limited rotative movement on said body, the connection between said sleeve and body being such that the sleeve is shifted axially by its.

rotative movement, said adjusting sleeve havlng operatlve engagement with sald jaws, a reversing member rotatively mounted on said head member and provided with a beveled gear, a beveled gear rotatable with said body member, and pinions carried by said head member meshing with said gears. A

22. In a chuck, the combination of a head member, a body member rotatably mounted on said head member provided with longitudinal jaw ways, aws arranged in said jaw ways, a jaw adjusting sleeve having limited rotative movement on said body, the connection between said sleeve and body being such that the sleeve is shifted axially by its rotative movement, said adjusting sleeve having operative engagement with said jaws, and a reversing member rotatably mounted on said head member and having driving connection with said body member for the purpose specied.

In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

ERNEST C. BOWERS. [La] Witnesses: LUELLA G. GREENFIELD,

MARGARET L. GLASGOW. 

